标题： 塑造单个光子的相位 显示英文标题

标题： Shaping the Phase of a Single Photon

摘要： 虽然相干光场的相位可以精确已知，但构成该场的单个光子的相位，若单独考虑，则不能。然而，单光子波包内的相位变化具有可观测的影响。事实上，主动控制单个光子的相位已被确定为量子通信协议中的强大资源。在这里，我们展示了对单个光子的任意相位控制。相位调制是在不影响光子幅度轮廓的情况下应用的，并通过双光子量子干涉测量进行验证，这可能导致光子对的费米子空间行为。结合之前展示的对单个光子幅度、频率和偏振的控制，此处提出的完全确定的相位整形允许对单个光子波包进行全面控制。 显示英文摘要

摘要： While the phase of a coherent light field can be precisely known, the phase of the individual photons that create this field, considered individually, cannot. Phase changes within single-photon wave packets, however, have observable effects. In fact, actively controlling the phase of individual photons has been identified as a powerful resource for quantum communication protocols. Here we demonstrate the arbitrary phase control of a single photon. The phase modulation is applied without affecting the photon's amplitude profile and is verified via a two-photon quantum interference measurement, which can result in the fermionic spatial behaviour of photon pairs. Combined with previously demonstrated control of a single photon's amplitude, frequency, and polarisation, the fully deterministic phase shaping presented here allows for the complete control of single-photon wave packets.